Identification of avian flapping motion from non-volant winged dinosaurs based on modal effective mass analysis

doi:10.1371/journal.pcbi.1006846

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	Identification of avian flapping motion from non-volant winged dinosaurs based on modal effective mass analysis
	Talori, Yaser Saffar 1; Zhao, Jing-Shan 1; Liu, Yun-Fei 1; Lu, Wen-Xiu 1; Li, Zhi-Heng 2; O'Connor, Jingmai Kathleen 2
刊名	PLOS COMPUTATIONAL BIOLOGY
	2019-05-01
卷号	15 期号:5 页码:16
DOI	10.1371/journal.pcbi.1006846
英文摘要	The origin of avian flight is one of the most controversial debates in Paleontology. This paper investigates the wing performance of Caudipteryx, the most basal non-volant dinosaur with pennaceous feathered forelimbs by using modal effective mass theory. From a mechanical standpoint, the forced vibrations excited by hindlimb locomotion stimulate the movement of wings, creating a flapping-like motion in response. This shows that the origin of the avian flight stroke should lie in a completely natural process of active locomotion on the ground. In this regard, flapping in the history of evolution of avian flight should have already occurred when the dinosaurs were equipped with pennaceous remiges and rectrices. The forced vibrations provided the initial training for flapping the feathered wings of theropods similar to Caudipteryx. Author summary The origin of avian flight in the perspective of mechanics has been investigated for the first time. We reported the first evidence for flapping hypothesis based on principle of physical modeling. This is significant because using modal effective mass method and reconstructed Caudipteryx, the most basal non-volant winged dinosaur, we captured significant and negligible modes and realized that resonance oscillation of Caudipteryx wings could occur as the running speed approached to the primary frequencies. Such forced vibrations induced by legs' motions during running trained the Caudipteryx and the other feathered dinosaurs to flap their wings.
资助项目	National Natural Science Foundation of China[51575291] ; National Major Science and Technology Project of China[2015ZX04002101] ; State Key Laboratory of Tribology, Tsinghua University ; 221 program of Tsinghua University
WOS关键词	BIZARRE JURASSIC MANIRAPTORAN ; BIPEDAL RUNNING ABILITY ; SENSITIVITY-ANALYSIS ; FEATHERED DINOSAURS ; EARLY EVOLUTION ; ARCHAEOPTERYX ; FLIGHT ; BIRDS ; PALEONTOLOGY ; THEROPOD
WOS研究方向	Biochemistry & Molecular Biology ; Mathematical & Computational Biology
语种	英语
出版者	PUBLIC LIBRARY SCIENCE
WOS记录号	WOS:000471040500018
内容类型	期刊论文
源URL	[http://119.78.100.205/handle/311034/10001]
专题	古脊椎动物与古人类研究所_图书馆1
通讯作者	Zhao, Jing-Shan
作者单位	1.Tsinghua Univ, Dept Mech Engn, Beijing, Peoples R China 2.Chinese Acad Sci, Key Lab Vertebrate Evolut & Human Origins, Inst Vertebrate Paleontol & Paleoanthropol, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Talori, Yaser Saffar,Zhao, Jing-Shan,Liu, Yun-Fei,et al. Identification of avian flapping motion from non-volant winged dinosaurs based on modal effective mass analysis[J]. PLOS COMPUTATIONAL BIOLOGY,2019,15(5):16.
APA	Talori, Yaser Saffar,Zhao, Jing-Shan,Liu, Yun-Fei,Lu, Wen-Xiu,Li, Zhi-Heng,&O'Connor, Jingmai Kathleen.(2019).Identification of avian flapping motion from non-volant winged dinosaurs based on modal effective mass analysis.PLOS COMPUTATIONAL BIOLOGY,15(5),16.
MLA	Talori, Yaser Saffar,et al."Identification of avian flapping motion from non-volant winged dinosaurs based on modal effective mass analysis".PLOS COMPUTATIONAL BIOLOGY 15.5(2019):16.